Mediastinal (N2) lymph node involvement is heterogeneous with huge variation in the extent and grouped together under stage IIIA. However, they showed a different survival even in the same stage. We tried to determine the prognostic implication of the multiple station N2 lymph node metastasis in stage IIIA N2 non-small cell lung cancer (NSCLC). The survival of stage IIIA N2 was analyzed accordi...

A variety of N2-fixers occur in oligotrophic waters and these diazotrophs make a substantial contribution to the nitrogen budget of the upper water column. A synthesis of previously published and new rate measurements for the North Atlantic provides insight into the role of two different groups of N2-fixers (Trichodesmium and small diazotrophs) in supporting N2 fixation in the tropical Atlantic...

We have investigated the electronic ground-state structure and binding mode of CH2N2 by ab initio multireference perturbation calculations CASPT2 and CASPT3, using correlation consistent cc-pVTZ basis sets. Our calculations suggest that the CH2-N2 binding between the CH2 (ãA1) and N2 (XΣg) moieties consists of a “harpooning” σ, bond from N2 to CH2 and a π-like bond due to the back-transfer of e...

For all integers k with k≥2, if G is a balanced k-partite graph on n≥3 vertices minimum degree at least⌈n2⌉+⌊n+22⌈k+12⌉⌋−nk={⌈n2⌉+⌊n+2k+1⌋−nk:k odd n2+⌊n+2k+2⌋−nk:k even , then has Hamiltonian cycle unless 4 divides n and k∈{2,n2}. In the case where k∈{2,n2}, we can characterize graphs which do not have see that ⌈n2⌉+⌊n+22⌈k+12⌉⌋−nk+1 suffices. This result tight for k≥2 divisible by k.